Javier Jimenez ShawFeb 26

*PROJ in the browser*

Finally, after a long time and learning a lot in the process, I am getting a webpage that uses PROJ to perform coordinate transformations (similar to cs2cs)

https://jjimenezshaw.github.io/wasm-proj/transform.html

Best features:
- fast!
- it uses grid files when needed, downloading only the needed part of them.

There's another one that replicates projinfo:
https://jjimenezshaw.github.io/wasm-proj/projinfo.html

It has its js library behind it. I'm still developing it, improving it & adding more features.

Enjoy!

#gis #gischat

CRS Transformation Tool

Show threadAtle 🧇🧅Feb 26

@jjimenezshaw cool!

I was trying to find the source code, but the master branch seems kinda empty?

Show threadJavier Jimenez Shaw

@atlefren yes, you are right. I am still changing many things in the js source code (and learning). When I am done I will merge it into master branch. If you cannot wait, you can search among the branches ;)

The idea is to have a simple js library and some html files that uses it. KISS.

Feb 26 at 4:31pmWeb
Show threadAtle 🧇🧅Feb 26
@jjimenezshaw thanks!
This is really interesting, would love to read a write-up of what you've learned in the process (if you have time to write something like that at some point)!
Show threadAtle 🧇🧅Feb 26
@jjimenezshaw and I'll gladly lend a hand if you need a js-sparring partner (my c++ is useless)
Show threadJavier Jimenez Shaw15h ago

@atlefren I finally merged wasm-proj into master. (It was not completely ready, but I wanted to do it before #fossgis2026 next week)
There are a few more features, and I have more ideas for the coming months.

Go to the index page at https://jjimenezshaw.github.io/wasm-proj

BTW, no cookies, no ads, no trackers.

Wasm PROJ - Home

Show threadAtle 🧇🧅15h ago
@jjimenezshaw cool, thanks!